Hahaha xD
This pokemon will live in cliffs or forests
This pokemon copies his OU big brother competitively!

Hmm... For some reason i'm thinking of Septile.

Non!

Chimchar? He's a lead in LC, I think.

Gurdurr

He lacks the offense of his big brother, and his older form has a special tool that this Pokemon doesn't, so he has to use other tricks, but he still makes a nice physical wall.

Special tool...I don't think it's Magneton, so maybe Zweilous?

Non!

Nidorino?

Porygon2 lol?